Merging two assosiative arrays in php? - php

Question

I have two associative arrays.
array ( [apple]=>1 [banana]=>2 cocunet => 3)
and other array is
array ( [apple]=>2 [banana]=>3 cocunet => 4)
now i want to merge my array like that
array ( [apple]=>1,2 [banana]=>2,3 cocunet => 3,4)

Answer 1

There is no such array in PHP. The thing you want can only be done by creating multidimentional arrays.
$a1 = array( 'apple'=>1,'banana'=>2,'coconut'=> 3);
$a2 = array( 'apple'=>2,'banana'=>3,'coconut'=> 4);
echo "<pre>";
print_r(array_merge_recursive($a1,$a2));
echo "</pre>";
For this you can use the array_merge_recursive() function.
PHPFiddle: http://3v4l.org/5OCKI

Answer 2

If you want the result to be a string then this should work:
foreach( $array_1 as $fruit => $num) {
if(array_key_exists($fruit, $array_2)){ //check if key from array_1 exists in array_2
$final_array[] = array($fruit => $array_1[$fruit].','.$array_2[$fruit]); //concatenate values from shared key
}
}
print_r($final_array) will return:
Array
(
[0] => Array
(
[apple] => 1,2
)
[1] => Array
(
[banana] => 2,3
)
[2] => Array
(
[coconut] => 3,4
)
)

Answer 3

<?php
$array1 = array("apple" => 5, "banana" => 1);
$array2 = array("banana" => 4, "coconut" => 6);
print_r( array_merge_recursive( $array1, $array2 ) );
?>
Returns:
Array ( [apple] => 5 [banana] => Array ( [0] => 1 [1] => 4 ) [coconut] => 6 )
I only used two elements in each of the primary arrays to demonstrate the output prior to having any groups existing, i.e. non-array value.